1022388 has 12 divisors (see below), whose sum is σ = 2385600. Its totient is φ = 340792.

The previous prime is 1022387. The next prime is 1022389. The reversal of 1022388 is 8832201.

It is an interprime number because it is at equal distance from previous prime (1022387) and next prime (1022389).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42588 + ... + 42611.

It is an arithmetic number, because the mean of its divisors is an integer number (198800).

2^1022388 is an apocalyptic number.

It is an amenable number.

1022388 is an abundant number, since it is smaller than the sum of its proper divisors (1363212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022388 is a wasteful number, since it uses less digits than its factorization.

1022388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85206 (or 85204 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1022388 is about 1011.1320388555. The cubic root of 1022388 is about 100.7407657778.

Adding to 1022388 its reverse (8832201), we get a palindrome (9854589).

The spelling of 1022388 in words is "one million, twenty-two thousand, three hundred eighty-eight".